I am using the NUC5i7RYH at 3 locations running Windows 10 with DUAL Vizio 55" displays, working successfully at 2 of the 3 locations.

At my most recent deployment I had to order the more current Vizio M55-D0 display. I have one display connected via DP to HDMI, and the other via Mini HDMI to HDMI. Only 1 Display is showing it's content at any time, the Intel Graphics Control Panel recognizes that 2 Displays are connected. The Vizio display without any content shows No Signal, if I unplug the display from the NUC that was displaying content then the display that was not previously displaying content will.

I have updated the BIOS, Chipset driver, and Video driver in attempts to resolve.